Practice Exam

1. What is the single vertical datum to which elevation for all infrastructure projects should be referred to?

A. Mean Sea Level

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B. 10.47 m below mean Sea Level

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C. 10.00 below mean Lower Low Water

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D. Mean Lower Low Water

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2. In surveying, when using the Philippine Reference System of 1992 (PRS92), the Philippine Plane Coordinate System (PPCS) assumes the earth to take a form of

A. A sphere

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B. An ellipsoid

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C. A flat surface

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D. An oblong

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3. A remote sensing method that uses light in the form of pulse laser to measure ranges to the earth.

A. GPS

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B. GIS

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C. LIDAR

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D. Total Station

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4. An equation where BK (Back) is greater than AH (Ahead) means:

A. A deductive distance

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B. An additive (plus) distance

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C. No increase in distance

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D. The road length

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5. A system designed to capture, store, manipulate, analyse, manage, and present all types of geographic data.

A. GPS

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B. GIS

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C. PowerPoint

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D. Total Station

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6. Painted sticks placed along the side of the road traverse as guide and reference in the elevation of the different layering requirements of the road Project.

A. Stakes

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B. Bench marks

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C. Blue tops

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D. Monuments

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7. A set of revised drawings shows a grade separation structure at railroad crossing with cross sections of the railroad taken at 20 m interval and extended at least 50 m from both sides of the centerline. Does the 50 m extension conform to survey or design requirements?

A. Yes, 50 m is in order

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B. No, it should be 100 m both sides

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C. No, it should be 200 m both sides

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D. No, 100 m left side and 200 m right side

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8. The process of obtaining design data and analysing in detail the soil properties in order to decide the most suitable construction method and equipment to be used.

A. Test Pitting

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B. Soil Investigations

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C. Surveying

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D. Soil Boring

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9. To avoid hitting a waterfall, realignment of the route must be done. Being a new road that will pass through loose or heterogeneous strata, auger borings should be made on the proposed alignment at an average interval of:

A. 150 m

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B. 200 m

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C. 250 m

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D. 500 m

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10. Which of the following is not included in the exploration of foundation strata?

A. Driving test rods

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B. Boring with auger

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C. Drilling test hole

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D. Nuclear density test

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11. Soil will have greater strength if its particles are:

A. Uniformly graded

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B. Well-graded

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C. One-sized

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D. Gap-graded

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12. Sub-grade soil is well compacted under the controlled condition of:

A. Over saturation with water

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B. Optimum moisture content and maximum dry density

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C. Dry soil

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D. Cold weather

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13. Clay can be made plastic by:

A. Air-drying

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B. Adjusting its water content

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C. Continuous rolling

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D. Pulverizing

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14. Clay can be distinguished from silt by performing:

A. Sieve analysis test

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B. Hydrometer test

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C. Plastic limit test

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D. Liquid limit test

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15. If 95°/o of a soil passes the No. 200 mm sieve, its particle size distribution is best determined by:

A. Hydrometer Analysis

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B. Sieve Analysis

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C. Combination of a and b

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D. Atterberg Limit Test

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16. Soil classification is determined by:

A. Atterberg limits tests

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B. Sieve analysis test

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C. Hydrometer test

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D. A and B

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17. If the type of soil in Item 200 material is non-plastic, what Atterberg limit test can be performed?

A. Plastic limit

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B. Liquid limit

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C. Shrinkage limit

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D. Both a and b

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18. If the type of soil in Item 200 material is non-plastic, what Atterberg Limit Test can be performed?

A. Plastic Limit

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B. Liquid Limit

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C. Shrinkage Limit

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D. Both a and b

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19. Depth of exploration for a highway project with light cut and fill where there are no special problems should extend to a maximum depth of:

A. 1.0 m below bottom of sub base

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B. 1.5 m below proposed subgrade

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C. 2.0 m below the proposed subgrade

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D. 3.0 m below the proposed subgrade

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20. In investing existing roads, auger boring and ________ should be made alternately at the center and edge of the pavement.

A. Test pits

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B. FDT

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C. Excavation

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D. Compaction

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21. It is a road necessary to divert traffic from any existing roadway, whenever the construction operations block the flow of traffic.

A. Gravel road

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B. Access road

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C. Detour road

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D. Earth road

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22. It is a type of road according to its surface course and sometimes termed as the “simplest form of road”

A. Concrete road

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B. Asphalt road

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C. Gravel road

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D. Earth road

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23. Minimum pavement thickness for Farm to Markel Roads?

A. 200 mm

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B. 250 mm

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C. 230 mm

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D. 280 mm

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24. It is a type of road according to its surface course and sometimes termed as an “all weather road”.

A. Concrete road

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B. Asphalt road

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C. Gravel road

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D. Earth road

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25. It is a type of road construction material which is very sensitive to moisture content and often is the cause of most road failures.

A. Asphalt

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B. Soil

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C. Concrete

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D. Aggregates

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26. The physical measurement used in the determination of the cost of maintenance of national roads and bridges and all its facilities is known as:

A. Lane kilometer

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B. Equivalent kilometer unit

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C. Equivalent maintenance kilometer

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D. Standard kilometer unit

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27. Before the start of a road project, a joint survey must be undertaken/conducted with the contractor, and ________________ plan/drawing prepared and submitted for approval by the higher authorities, if there are deviations from the original plan.

A. Working

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B. As-built

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C. As-staked

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D. For construction

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28. The required minimum pavement width of two-lanes Farm to Market Road with average daily traffic of 200 shall be

A. 5.0 m

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B. 5.6 m

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C. 6.1 m

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D. 6.7 m

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29. The required minimum carriageway width of a bridge for farm to Market Road with average daily traffic of 200 shall be

A. 5.0 m

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B. 5.6 m

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C. 6.1 m

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D. 6.7 m

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30. The desirable minimum length of turnouts (Loading and Unloading bays) along National roads is

A. 50 m

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B. 60 m

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C. 100 m

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D. 185 m

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31. For longitudinal diggings/excavations by private and public Utilities on National roads the maximum length for open continuous excavation per street shall be

A. 50 m

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B. 100 m

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C. 150 m

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D. 500 m

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32. Pedestrian crossing markings consisting of a series of longitudinal bars 300 mm (for speed less than 60 kph) or 600 mm (for speed more than 60 kph) wide, generally not less than 4 m long and are placed parallel to the road centerline with gaps of equal width between bars is called

A. Zebra

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B. Crosswalk

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C. Stop line

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D. Rumble Strips

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33. Pedestrian refuge island shall be provided on roadways having clear carriage way width of at least 4 lanes in areas where there are concentration of pedestrian except at locations

A. In front of school

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B. In front of church

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C. In front of market

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D. Of signalized intersection

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34. When pedestrian refuge island along National road is required, the island shall have a minimum width of _____ and total length of ______.

A. 1.5 m, 30m

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B. 1.2 m, 25 m

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C. 2.0 m, 25 m

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D. 2.5 m, 50 m

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35. In order to provide a longer distance of continuous and uninterrupted flow of vehicular traffic along National roads, pedestrian zebra crossing shall not be installed within at least _____ of any other pedestrian facility.

A. 150 m

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B. 500 m

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C. 800 m

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D. 1 km

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36. Paving of shoulders shall be considered along sections of National roads only when AADT is

A. Greater than 400

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B. Greater than 1250

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C. Greater than 1400

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D. Greater than 1750

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37. At locations where pedestrians are normally concentrated such as churches, schools, markets, parks, and other areas for public use, pedestrian railings may be provided between the carriageway and paved shoulder with a minimum length of _____ before and after the designated cross walk.

A. 6 m

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B. 10 m

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C. 20 m

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D. 40 m

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38. Reflective thermoplastic pavement marking, Item 612, shall have a minimum thickness of

A. 1.2 mm

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B. 2.5 mm

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C. 3.2 mm

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D. 6.0 mm

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39. The thermoplastic pavement marking shall have a minimum longevity or durability of

A. 1 year

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B. 2 years

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C. 3 years

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D. 5 years

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40. To give allowance for future road improvement and widening and the space allotted for underground utilities, post for welcome arches or overhead boundary makers shall be located at a setback from RROW limit of

A. 1.5 m

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B. 2.0 m

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C. 3.0 m

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D. 5.0 m

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41. Overhead boundary marker shall be provided with minimum vertical clearance from the roadway surface of

A. 4.88 m

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B. 5.03 m

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C. 5.33 m

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D. 5.50 m

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42. For overhead utility and power lines crossing the roadway where traffic comprise of trucks, vertical clearance from the roadway surface shall not be less than

A. 4.88 m

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B. 5.03 m

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C. 5.33 m

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D. 5.50 m

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43. Along the roadway and on areas designated for and frequented by pedestrians, the minimum vertical clearance of overhead utility and power lines from the surface of the side walk shall be

A. 4.88 m

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B. 5.03 m

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C. 5.33 m

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D. 5.50 m

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44. Placement of reflectorized thermoplastic rumble strips are to be located

A. Near residential areas

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B. Through pedestrian crossings

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C. On bicycle routes

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D. On rural locations

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45. Clearing of roadway shall extend _____________ beyond the toe of the fill slopes or beyond rounding of cut slopes for the entire length of the project.

A. 1.5 mtrs

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B. 3 mtrs

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C. 2 mtrs

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D. 1 mtr

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46. The material placed in all embankment layers shall be compacted and the material scarified to the designated depth below subgrade in cut sections, until a uniform density of not less than __________ of the maximum dry density.

A. 92.0 %

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B. 97.0 %

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C. 95.0 %

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D. 99.0 %

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47. What should be conducted if there is evidence of discrepancies on the actual elevation from those shown in the Plans?

A. Pre-construction Survey

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B. Parcellary Survey

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C. Geotechnical Survey

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D. Boring Test

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48. In an embankment work, which of the following activity is undertaken first?

A. Clearing and grubbing

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B. Excavation of core trench

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C. As-stake survey works

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D. Construction of the impervious fill

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49. What do you call the portion of earth or base course materials left unlevelled by a road grader during longitudinal grading operation?

A. Windrow

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B. Stockpile

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C. Hump

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D. Edging

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50. Unless otherwise provided in the Contract, the free-haul distance for excavated materials shall be

A. 100 meters

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B. 600 meters

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C. 1 kilometre

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D. 6 kilometres

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51. What is the difference between the Net Volume Suitable Materials Embankment and Net Volume of Suitable Materials form Excavation?

A. Free haul volume

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B. Overhaul volume

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C. Unsuitable materials

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D. Surplus materials

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52. Vegetation control along highways should be undertaken from the outer edge of the shoulder to:

A. Outer edge of side ditch lined canal

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B. Center of side ditch

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C. One (1) meter from edge

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D. Road-right-of-way limit

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53. In the DPWH Standard Specifications, what is the Item number of Embankment?

A. 100

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B. 102

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C. 104

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D. 106

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54. Proper compaction of the fill materials is very important, as it will.

A. Increase in the shear strength

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B. Decrease permeability

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C. Minimize compressibility

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D. All of the above

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55. The flow curve obtained when the liquid test results are plotted on a semi-log scale is in the form of

A. A parabola

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B. A straight line

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C. A hyperbola

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D. An arc

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56. The most appropriate filling material if unsuitable roadway foundation is encountered?

A. Fine aggregates

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B. Coarse aggregates

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C. Broken concrete

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D. Granular materials

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57. Roadway embankment of earth material shall be placed in horizontal layers not exceeding ______________ , loose measurement, and shall be compacted as specified before the next layer is placed.

A. 150 mm

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B. 200 mm

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C. 300 mm

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D. 250 mm

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58. What is the required minimum field density for embankment materials?

A. 85 %

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B. 90 %

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C. 95 %

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D. 100 %

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59. A raised structure of soil, aggregate, rock or a combination of the three is called.

A. Embankment

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B. Revetment

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C. Dam

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D. Groundsill

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60. A horizontal strip or shelf built into an embankment or cut to break the continuity of an otherwise long slope.

A. Borrow

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B. Berm

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C. Median

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D. Wall

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61. For efficient compaction, the embankment material should at the time of rolling be

A. Dry

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B. Wet

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C. At optimum moisture content

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D. Depends on the soil type

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62. During compaction you found out that the soil is too wet. What should you do?

A. Reject the soil

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B. Remove and replace the soil

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C. Continue compaction

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D. Scarify and dry the soil by exposing it to air under suitable conditions

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63. You are doing an earth road construction. During the progress of construction, highly organic soil was encountered. What will you recommend to your firm?

A. Blend the highly organic soil with granular materials

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B. Remove and replace with more stable materials

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C. Cover the highly organic soil with boulders

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D. Placed several logs on the highly organic soils

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64. Which of the following does not characterize a good compaction?

A. Subsequent settlement is minimized

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B. Stability is increased

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C. Resistance to water absorption is decreased

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D. Change in moisture content is minimized

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65. How do you determine the degree of compaction of Items 104, 200, & 201?

A. Load test

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B. Test Pitting

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C. Field Density Test

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D. SPT

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66. The process whereby soil particles are contained more closely together through a reduction in the air voids, generally by mechanical means.

A. Soil compaction

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B. Mechanical analysis

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C. In-place unit weight

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D. CBR

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67. The degree of compaction of an embankment in our present Specifications is based on

A. CBR method

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B. Unconfined compression test

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C. AASHTO Designation T-180

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D. Bulk Specific Gravity

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68. What is the method used in constructing an embankment over a low swampy ground that cannot support the mass of truck loads and other hauling equipment?

A. Re-blocking

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B. Sealing

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C. Grouting

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D. Overlaying

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69. The physical and engineering properties of soils may be improved by

A. Compaction

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B. Stabilization

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C. Both A and B

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D. Neither A nor B

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70. Soil will have greater strength if its particles are:

A. Uniformly graded

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B. Well-graded

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C. One-sized

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D. Gap-graded

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71. Sub-grade soil is well compacted under the controlled condition of:

A. Oversaturation with water

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B. Optimum moisture content and maximum dry density

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C. Dry soil

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D. Cold weather

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72. The group index (G.I.) number is a measure of the relative supporting power of the subgrade soil. Thus higher G.I. number will require

A. Lesser depth of base and surface

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B. Greater depth of base and surface

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C. Lesser permeability

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D. Lesser capillarity

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73. How many grading tests are required for a 3,200 cu.m selected borrow topping (Item 104)?

A. 3

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B. 4

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C. 7

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D. 11

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74. It evaluates the quality of soil as highway subgrade material.

A. Atterberg limit

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B. Plasticity index

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C. Group index

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D. Liquid limit

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75. The empirical number used in evaluation for soil Group Index

A. 0 – 15

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B. 5 – 20

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C. 0 – 20

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D. 0 – 25

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76. The best soil for a road subgrade would have a group index of

A. Less than 3

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B. 5 to 10

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C. 11 to 15

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D. 16 to 20

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77. It indicates very poor subbase materials when G.I. number is

A. 0

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B. 5

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C. 10

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D. 20

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78. The most common method of assessing strength and stiffness of both subgrade and pavement is

A. FDT

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B. CBR

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C. SPT

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D. None of the above

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79. This is defined as the highest moisture content of which the mass attains its minimum volume but continues to lose weight

A. Plastic limit

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B. Liquid limit

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C. Shrinkage limit

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D. Plasticity index

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80. Optimum water content of soil is determined by ________.

A. Field density test

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B. Liquid limit test

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C. Compaction test

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D. Unit weight test

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81. The density to which a soil can be compacted is related to

A. Compactive effort

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B. Water content

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C. Both A and B

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D. None of the above

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82. Which of the following are most suitable for construction of highway embankments?

A. Granular

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B. Fine-grained

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C. Plastic

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D. Clayey

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83. Which of the following characterize/s unsuitable materials for embankment?

A. Soil with liquid limit exceeding 80

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B. Plasticity index exceeding 55

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C. Soil with natural water content exceeding 100%

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D. All of the above

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84. Shrinkage factor test determines ____________ .

A. Pay volume

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B. Strength characteristic

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C. Volume change

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D. Maximum density

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85. If the soil is properly compacted at MDD it will have

A. Increased stability/ strength

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B. Minimized future settlement

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C. Decreased permeability

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D. All of the above

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86. The use of geofabric material to increase the strength of the subgrade material for road construction is classified as

A. Matting method

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B. Soil strengthening method

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C. Soil reinforcement method

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D. Geotechnical method

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87. A rock fragment usually rounded or semi-rounded with an average dimension between 75mm – 305mm

A. Aggregates

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B. Stones

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C. Boulders

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D. Riprap

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88. Rock shall be excavated to a depth of ___________below sub grade within the limit of the roadbed and the excavation backfilled with materials designated on the plan.

A. 100 mm

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B. 150 mm

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C. 200 mm

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D. 300 mm

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89. Soft and unstable soils were encountered during the course of sub grade preparation. What is the most effective and cheaper method that you would recommend to stabilize the soil prior to the construction of the sub base course?

A. Remove and replace with suitable materials

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B. Use lean concrete to stabilize the sub base

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C. Use geotextiles

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D. Increase the thickness of surface course

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90. Unless otherwise specified, all materials below subgrade level in earth should be cut to this depth.

A. 100 mm

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B. 150 mm

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C. 200 mm

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D. 250 mm

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91. In construction of embankment on a relatively flat terrain, rolling/compaction operation shall progress gradually from the sides to the center, parallel to the center of the road and shall continue until the whole surface has been rolled up to the number of passes required based on the trial section result where a minimum density of 95% is attained. During the progress of rolling, a minimum overlapped width of _________ shall be observed for each succeeding parallel passes to ensure level compacted surface.

A. 250 mm

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B. 200 mm

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C. 150 mm

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D. 300 mm

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92. What is the required area of the trial section needed to check the suitability of the materials and efficiency of the equipment and construction method the contractor will use?

A. About 100 sq. m.

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B. About 400 sq. m

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C. About 500 sq. m.

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D. About 600 sq. m.

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93. For sub-base, the compaction of each layer shall continue until a field density of at least ____________ of the maximum dry density has been achieved.

A. 98.0 %

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B. 97.0 %

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C. 95.0 %

Correct Incorrect Correct answer

D. 100.0 %

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94. The minimum percent compaction for base of the road.

A. 100.00%

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B. 105.00 %

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C. 110.00%

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D. 95.00%

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95. How many set/s of in-situ density tests is required in a 1500 square meter compacted aggregate subbase course?

A. 1

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B. 2

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C. 3

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D. 5

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96. The layer used in the pavement system between the subgrade and the base course

A. Embankment foundation

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B. Embankment

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C. Surfacing

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D. Sub-base

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97. If the designed thickness of aggregate sub base course is 200 mm, in how many layers may the material be spread and compacted?

A. 1

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B. 2

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C. 3

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D. 4

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98. If the required thickness of Item 200 is 300 mm, the material may be spread and compacted in how many layer(s).

A. One

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B. Two

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C. Three

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D. Uniform

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99. Per program of work, the estimated volume of Item 201 materials is 7,500 cu. m. How many quality tests are required based on the DPWH minimum testing requirement?

A. 5

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B. 7

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C. 9

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D. 3

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100. Per program of work, the estimated volume of Item 201 materials is 7,500 cu. m. How many Grading and Plasticity tests are required based on the DPWH minimum testing requirement?

A. 5

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B. 25

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C. 15

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D. 20

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101. Verification of in-placed Items 200 and 201 materials were conducted thru test pitting. How do you determine whether Item 201 was incorporated in the project?

A. Determine its soil texture

Correct Incorrect Correct answer

B. Scrutinize project reports/ logbooks

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C. Determine the maximum size of aggregates in-place

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D. Verify delivery receipts

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102. What will you do if you find out that the materials to be used as Item 200 is finer than the required materials?

A. Reject the materials

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B. Use the materials as it is

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C. Blend Item 200 with coarser materials

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D. Retest the materials

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103. The thickness of in-place sub base course can be determined by

A. As stake survey

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B. Test pitting

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C. Pile driving

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D. Load bearing test

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104. Which of the following is not a field test in road construction?

A. Density test

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B. Core Boring test

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C. California Bearing Ratio (CBR) test

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D. Dynamic Cone Penetrometer test

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105. What is the accepted proportion mixture of lime to be added to the soil aggregate (dry soil), in a Lime Stabilized Road Mix Base Course (Item 203)?

A. 2 to 10 mass percent

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B. 4 to 15 mass percent

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C. 3 to 18 mass percent

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D. 3 to 12 mass percent

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106. Camber on gravel roads is provided to:

A. Establish a smooth riding surface.

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B. Prevent water from stagnating on the carriageway.

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C. Provide boundary line for the two lanes.

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D. Plant grass for sodding.

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107. For purposes of pavement design, the varying axle loads are converted to a common denominator which is in terms of:

A. 5,000 lb (22 kN) wheel load

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B. 10,000 lb (44 kN) single axle load

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C. 32,000 lb (142 kN)tandem axle load

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D. 18,000 lb (80 kN) single axle load

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108. Permitted variation from the design thickness of a layer of aggregate base course?

A. ± 20 mm

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B. ± 15 mm

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C. ± 25 mm

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D. ± 10 mm

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109. Surface irregularity tolerance for item 201.

A. 5 mm

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B. 10 mm

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C. 15 mm

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D. 20 mm

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110. Permitted variation from the design thickness of a layer of aggregate sub base course?

A. ± 20 mm

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B. ± 10 mm

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C. ± 30 mm

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D. ± 15 mm

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111. Provided for the purpose of counteracting moisture movement within the structure either by seepage or capillary action.

A. Surface drainage

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B. Chemical admixtures

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C. Compaction

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D. Subsoil drainage

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112. The minimum soak CBR value of aggregate sub base course.

A. 25.0 %

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B. 30.0 %

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C. 35.0 %

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D. 20.0 %

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113. A one lane road, with a pavement width of 3.5 meters and shoulder width of 0.5 meter on each side of the pavement, was designed to have sub base and base courses with a combined thickness of 300 mm. If the thickness of the sub base is a 125 mm, the spreading and compaction of the sub base and base course shall be carried out in _______.

A. 2 layers over a width 4.0 m

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B. 2 layer over the full width of 4.5 m

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C. 3 layers over a width of 4.0 m

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D. 3 layers over a width of 4.5 m

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114. What is the meaning of PCCP?

A. Pozzoland Cement Concrete Paving

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B. Pozzoland Concrete Cement Pavement

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C. Portland Concrete Cement Pavement

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D. Portland Cement Concrete Pavement

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115. To determine the proportion of cement, water, fine aggregates and coarse aggregates to achieve the design strength of concrete, the contractor should submit

A. Cement samples

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B. Concrete Design Mix

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C. Materials inspection report

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D. Mill certificate

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116. The number of sets of beam test specimens that should be taken from 700 sq.m. of concrete pavements, 0.23 cm thick poured on a single day should be:

A. 2

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B. 3

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C. 6

Correct Incorrect Correct answer

D. 9

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117. Before the cement is to be used, sampling must be done at least _____ before use.

A. One week

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B. 30 days

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C. Two weeks

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D. 12 days

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118. Which of the following is not a quality test for cement?

A. Compressive strength

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B. California Bearing Ratio

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C. Loss of Ignition

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D. Soundness

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119. One set of sample of 10kg cement taken for Quality test will represent a maximum of how many bags of cement?

A. 100 bags

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B. 150 bags

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C. 1,000 bags

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D. 2,000 bags

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120. What is the maximum percentage permitted for fly ash as partial replacement of Portland Cement?

A. 15%

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B. 20%

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C. 25%

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D. None of the above

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121. Before placing concrete, the base of a roadway for concreting should be kept in moist condition and saturated with water for at least:

A. 6 hrs

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B. 1.5 hrs

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C. 2 hrs

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D. 3 hrs

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122. What kind of forms are required to be used in item 311?

A. Wooden forms

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B. Steel forms

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C. C-purlins

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D. Any of the above

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123. Prescribed tools to be used in removal of PCCP side form

A. Crowbar

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B. Chisel and hammer

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C. Shovel

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D. Any tools

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124. The desired property of fresh concrete is

A. Strength

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B. Durability

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C. Workability

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D. Water tightness

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125. Workability of a concrete mix is determined by

A. Submitting concrete Design Mix

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B. Concrete Cylinder compression test

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C. Slump Test

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D. Concrete Beam Flexure test

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126. The required slump of workable concrete in PCCP construction if vibrated is.

A. 10 – 25 mm

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B. 10 – 40 mm

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C. 40 – 50 mm

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D. 40 – 75 mm

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127. What is the slump of a workable concrete for PCCP if not vibrated?

A. 10 – 25 mm

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B. 10 – 40 mm

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C. 40 – 50 mm

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D. 40 – 75 mm

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128. The most important single factor which affects the quality of concrete is

A. Cement content

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B. Aggregate gradation

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C. Water-cement ratio

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D. Aggregate quality

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129. The time elapsed from the time water is added to the concrete mix and transported by a truck mixer or truck agitators up to the time said mix is deposited in place at the site should not exceed:

A. 50 minutes

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B. 45 minutes

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C. 90 minutes

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D. 75 minutes

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130. The time elapsed from the time water is added to the concrete mix and transported by a non-agitating truck up to the time said mix is deposited in place at the site should not exceed:

A. 50 minutes

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B. 45 minutes

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C. 75 minutes

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D. 90 minutes

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131. When concrete is delivered in truck mixers, additional water may be added to the batch and additional mixing performed to increase the slump to meet the specified requirement if permitted by the Engineer, provided all these operation are performed within _______ after the initial mixing operation and the water and cement ratio is not exceeded.

A. 30 minutes

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B. 15 minutes

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C. 45 minutes

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D. 60 minutes

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132. The main problem associated with wrong practice of conveying concrete is called _______ .

A. Cracking

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B. Segregation

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C. Hardening

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D. Bleeding

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133. When consolidating concrete during pouring operations, vibrator should not be operated in any one location longer than ___________.

A. 10 seconds

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B. 15 seconds

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C. 05 seconds

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D. 20 seconds

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134. The initial setting time of Portland cement is not less than

A. 20 minutes

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B. 45 minutes

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C. 1 hour

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D. 90 minutes

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135. To attain a uniform consistency of concrete during the pouring operation of a concrete pavement by slip form paver, the slump should not be more than:

A. 40 mm (1 1/2 inches)

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B. 50 mm (2 inches)

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C. 63 mm (2 1/2 inches)

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D. 75 mm (3 inches)

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136. The water from the pavement surface is removed by providing which of the following to the pavement?

A. Weep hole

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B. Drain hole

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C. Cross drain

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D. Camber or cross slope

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137. For major interchanges and busy intersection, PCCP will be allowed to open on the _______ to minimize occurrence of road congestion.

A. 14th day

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B. 10th day

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C. 12th day

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D. 7th day

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138. Between stages of curing, concrete shall not be exposed for more than how many hours?

A. 24 hours

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B. 3 hours

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C. ½ hours

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D. 72 hours

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139. Which of the following is not an applicable method for curing?

A. Cotton mat curing

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B. Straw curing

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C. Curing compound

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D. Wet rice hull curing

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140. Per our present Specifications for Highways and Bridges, including amendments, it is mandatory to open PCCP to traffic not later than

A. 7 days after pouring

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B. 14 days after pouring

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C. 21 days after pouring

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D. 28 days pouring

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141. Rate of application for curing compound is

A. 0.30 L/sq. m.

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B. 0.20 L/sq. m.

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C. 015 L/sq. m.

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D. 0.10 L/sq. m.

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142. The maximum width of the weaken plane joint should be

A. 5 mm

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B. 6 mm

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C. 9 mm

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D. 12 mm

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143. Finished transverse expansion joint shall not deviate by more than _______ from a straight line.

A. 6 mm

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B. 7 mm

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C. 8 mm

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D. 5 mm

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144. What is the allowable smooth riding quality of PCCP?

A. 3 m/km

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B. 5 m/km

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C. 9 m/km

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D. 10 m/km

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145. A concrete road section was not accepted or payment beam samples representing said section failed to meet specified strength requirements. As Project Engineer of the project, what would you recommend?

A. Remove and replace said section

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B. Conduct core test for strength determination

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C. Request for price adjustment

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D. Make another beam samples

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146. According to the existing specifications, during coring of completed PCC pavement the required number of cores per kilometre per lane is

A. 4

Correct Incorrect Correct answer

B. 5

Correct Incorrect Correct answer

C. 6

Correct Incorrect Correct answer

D. 7

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147. Construction joint is required to be constructed when there is an interruption of more than ______________ in the concreting operations of a road pavement.

A. 20 minutes

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B. 30 minutes

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C. 40 minutes

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D. 60 minutes

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148. The joint that is required to be constructed when there is an interruption of more than 30 minutes in the concreting operations of a road pavement?

A. Longitudinal joint

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B. Transverse expansion joint

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C. Transverse contraction joint

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D. Transverse construction joint

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149. The Item No. for Portland Cement Concrete Pavement in the DPWH Standard Specification is _________.

A. 200

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B. 201

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C. 310

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D. 311

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150. A transverse construction joint is constructed when there is an interruption of more than 30 minutes in the concreting works. This joint is also referred to as

A. Contraction joint

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B. Cold joint

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C. Expansion joint

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D. Weakened plane

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151. What kind of reinforcing steel is used for PCCP?

A. Plain square bars

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B. Plain round bars

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C. Deformed square bars

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D. Deformed round bars

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152. If the strength of Item 311 control specimens does not meet the requirements by not more than 25% and it is not feasible to obtain cores from the structure due to structural consideration:

A. The strength of in-place concrete will be determined by rebound a hammer

Correct Incorrect Correct answer

B. Payment of the concrete will be made at an adjusted price

Correct Incorrect Correct answer

C. No pavement will be made on the concrete represented by the failed specimen

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D. The contractor will be required to remove and replace the concrete represented by the failed specimens at his own expense.

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153. The depth of corrugation and roughened finish by brooming on the surface of a newly set concrete pavement should not be more than ___________.

A. 6.0 mm

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B. 1.5 mm

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C. 3.0 mm

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D. 2.5 mm

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154. At least (1) set consisting of ____ concrete beam test specimens shall be taken from each 330 sq.m. of pavement, 0.23 cm thick, or fraction thereof placed each day.

A. 2

Correct Incorrect Correct answer

B. 3

Correct Incorrect Correct answer

C. 6

Correct Incorrect Correct answer

D. 9

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155. As work progresses, at least one (1) set consisting of three (3) concrete beam test specimens, 150 mm x 150 mm x 525 mm or 900 mm shall be taken from each ________ sq mtr of pavement, 230 mm depth, or fraction thereof placed each day.

A. 330

Correct Incorrect Correct answer

B. 510

Correct Incorrect Correct answer

C. 250

Correct Incorrect Correct answer

D. 640

Correct Incorrect Correct answer

156. The minimum flexural strength requirement of concrete for Item 311 (Portland Cement Concrete Pavement) when tested by the third-point method at fourteen (14) days.

A. 500 psi

Correct Incorrect Correct answer

B. 550 psi

Correct Incorrect Correct answer

C. 3000 psi

Correct Incorrect Correct answer

D. 3500 psi

Correct Incorrect Correct answer

157. How many hours can sawing of joints commence given that concrete has hardened sufficiently without excessive ravelling.

A. 36

Correct Incorrect Correct answer

B. 72

Correct Incorrect Correct answer

C. 48

Correct Incorrect Correct answer

D. 24

Correct Incorrect Correct answer

158. Forms for concrete pavement shall remain in place undisturbed for not less than ________ after concrete pouring.

A. 24 hours after concrete pouring

Correct Incorrect Correct answer

B. The curing period

Correct Incorrect Correct answer

C. The period required to attain the design strength

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D. 72 hours after concrete pouring

Correct Incorrect Correct answer

159. How many core samples should be taken for thickness determination of a 2kilometer, 2-lane concrete road pavement?

A. 10

Correct Incorrect Correct answer

B. 40

Correct Incorrect Correct answer

C. 30

Correct Incorrect Correct answer

D. 20

Correct Incorrect Correct answer

160. Cores are taken from a concrete pavement and tested for:

A. Strength verification of concrete in place that is considered adequate

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B. Flexural strength determination

Correct Incorrect Correct answer

C. Cement content determination

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D. Thickness determination

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161. The depth of the weakened joint should at all times not be less than:

A. 50 mm

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B. 60 mm

Correct Incorrect Correct answer

C. 70 mm

Correct Incorrect Correct answer

D. 75 mm

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162. On (PCCP) Portland Cement Concrete Pavement, the depth and width of weakened plane joints should at all times not be less than ______ and _______.

A. 20 mm and 4 mm, respectively

Correct Incorrect Correct answer

B. 50 mm and 6 mm, respectively

Correct Incorrect Correct answer

C. 40 mm and 3 mm, respectively

Correct Incorrect Correct answer

D. 30 mm and 5 mm, respectively

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163. In accepting completed concrete pavement poured by lane thickness determination shall come out by obtaining one core from every:

A. 100 meters

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B. 200 meters

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C. 500 meters

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D. 1000 meters

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164. Scaling of newly constructed concrete pavement is an evidence of inadequate quality control mainly due to high

A. Fineness modules

Correct Incorrect Correct answer

B. Slump

Correct Incorrect Correct answer

C. Fine aggregates content

Correct Incorrect Correct answer

D. Water cement ratio

Correct Incorrect Correct answer

165. The depth of the weakened joints of concrete pavement must not be less than _______ while the width should not be more than ______.

A. 40mm & 6mm

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B. 50mm & 5mm

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C. 40mm & 5mm

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D. 50mm & 6mm

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166. Concrete, as soon as placed, shall be struck off and screeded. The screed for the surface shall be at least ___________ longer than the maximum width of the slab to be struck off.

A. 30 cm

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B. 40 cm

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C. 50 cm

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D. 60 cm

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167. Vibrators shall operate a frequency of 8,300 to 9,600 impulses per minute under load at a maximum spacing of _______cm.

A. 30 cm

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B. 50 cm

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C. 60 cm

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D. 40 cm

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168. All cement shall be stored, immediately upon delivery at the Site, in weatherproof building which will protect the cement from dampness. Storage shall have a capacity of sufficient quantity to allow the required sampling for a minimum of _________ before the cement is to be used.

A. Ten (10) days

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B. Twenty (20) days

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C. Sixteen (16) days

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D. Twelve (12) days

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169. For Item 311 (Portland Cement Concrete Pavement), the compressive strength requirement of concrete for core taken at fourteen (14) days and tested in accordance with AASHTO T24.

A. 20.7 MPa (3000 psi)

Correct Incorrect Correct answer

B. 16.5 MPa (2400 psi)

Correct Incorrect Correct answer

C. 24.1 MPa (3500 psi)

Correct Incorrect Correct answer

D. None of the Above

Correct Incorrect Correct answer

170. The spacing of dowel bars for 280 mm thick PCCP?

A. 300 mm

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B. 274 mm

Correct Incorrect Correct answer

C. 250 mm

Correct Incorrect Correct answer

D. 295 mm

Correct Incorrect Correct answer

171. The spacing of dowel bars for 300 mm thick PCCP’?

A. 300 mm

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B. 274 mm

Correct Incorrect Correct answer

C. 250 mm

Correct Incorrect Correct answer

D. 295 mm

Correct Incorrect Correct answer

172. The depth of weakened plane joints on a 23.0 cm thick pavement should not be less than:

A. 45 mm

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B. 50 mm

Correct Incorrect Correct answer

C. 60 mm

Correct Incorrect Correct answer

D. 75 mm

Correct Incorrect Correct answer

173. The dimension of beam sample for paving concrete is _______.

A. 6”x6”21”

Correct Incorrect Correct answer

B. 6”x6”x 24”

Correct Incorrect Correct answer

C. 4”x 4”x 21.8”

Correct Incorrect Correct answer

D. 6”x6”x18”

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174. Concrete mix not placed within ______ minutes from the time ingredients were charged into the mixing drum or has developed initial set, should be rejected.

A. 90

Correct Incorrect Correct answer

B. 45

Correct Incorrect Correct answer

C. 30

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D. 15

Correct Incorrect Correct answer

175. The minimum flexural strength requirement of beam sample when tested by the third-point method at fourteen (14) days.

A. 3.5 Mpa

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B. 3.8 Mpa

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C. 4.0 Mpa

Correct Incorrect Correct answer

D. 4.5 MPa

Correct Incorrect Correct answer

176. Batching of concrete shall be conducted as to result in the weight to each material required within a tolerance of one (1) percent for cement and ________ for aggregates.

A. 1%

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B. 2%

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C. 3%

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D. 4%

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177. For batch mixing at the site of construction or at a central point, the flow of water shall be uniform and all water should be in the drum by the end of the first ____________ seconds of the mixing period.

A. 45 seconds

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B. 30 seconds

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C. 15 seconds

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D. 20 seconds

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178. To attain a uniform consistency of concrete during the pouring operation of a concrete pavement if vibrated, the slump should not be more than:

A. 40 mm (1.5 inches)

Correct Incorrect Correct answer

B. 50 mm ( 2 inches)

Correct Incorrect Correct answer

C. 62 mm (2.5 inches)

Correct Incorrect Correct answer

D. 75 mm ( 3 inches)

Correct Incorrect Correct answer

179. When batches are hauled to the mixer, bulk cement shall be transported either in waterproof compartments or between the fine and coarse aggregate. When cement is placed in contact with moist aggregates, batches will be rejected unless mixed within ________of such contact.

A. 1 hr

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B. 1 ½ hrs

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C. ½ hrs

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D. 2 hrs

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180. The minimum flexural strength requirement of beam sample when tested by midpoint method at fourteen (14) days.

A. 4.5 Mpa

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B. 3.5 Mpa

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C. 5.0 Mpa

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D. 3.8 MPa

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181. The strength level of the concrete will be considered satisfactory if the averages of all sets of three (3) consecutive strength test results equal or exceed the specified strength, fc’ and no individual strength test result is deficient by more than 15% of the specified strength, fc’.

A. 10 °/o

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B. 15 °/o

Correct Incorrect Correct answer

C. 20 °/o

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D. 25 °/o

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182. ACI 318 for a job-mixed concrete, mixing shall be continued not less than ____________ seconds after all materials are in the drum, unless a shorter time is shown to be satisfactory by the mixing uniformity tests of “Specification for Ready-Mixed Concrete” (PNS/ASTM C 94).

A. 90

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B. 45

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C. 30

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D. 15

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183. To attain a uniform consistency of concrete during the pouring operation of a concrete pavement if not vibrated, the slump should be between:

A. 10-20 mm

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B. 40-75 mm

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C. 40-50 mm

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D. 10-40 mm

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184. To protect portland cement concrete pavement against rain before it has sufficiently hardened, the contractor should be required to have at all times any of the following materials with the exception of.

A. Metal form or wood planks

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B. Burlaps or cotton mats

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C. Plastic sheeting material

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D. Plastic water stops

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185. The batches shall be so charged into the drum that a portion of the mixing water shall enter in advance of the cement and aggregate. The flow of water shall be uniform and all water should be in the drum by the end of the ____________ of the mixing period.

A. 20 seconds

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B. 15 seconds

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C. 10 seconds

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D. 25 seconds

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186. According to D.O. No. 40, s 2014, what is the required minimum thickness of PCCP in arterial and secondary National Roads?

A. 230 mm

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B. 250 mm

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C. 280 mm

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D. 300 mm

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187. For dowels and tie bars at transverse construction joints and longitudinal joints in pavement re-blocking works, holes shall be drilled on existing concrete with hole diameter at least _____ greater than the design dowel bar diameter.

A. 2mm

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B. 6 mm

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C. 10 mm

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D. 25 mm

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188. The required dowel bars for transverse joints in a 280 mm thick PCCP is 36 mm diameter spaced at 300m, but the biggest commercially available steel bar in the locality is only 32 mm diameter. The 32 mm diameter dowel bars maybe used as substitute and shall be placed at a spacing of

A. 230 mm

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B. 250 mm

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C. 300 mm

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D. 350 mm

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189. The use of slip-form paver with mechanical broom finisher is required for projects whose cost of item 311 – PCCP is

A. ≥ Php 10 Million

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B. ≥ Php 25 Million

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C. ≥ Php 50 Million

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D. ≥ Php 100 Million

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190. The required International Roughness Index (IRI) values for booth asphalt and pavement for National Roads is not more than

A. 0.9 m/km

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B. 2.5 m/km

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C. 3.0 m/km

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D. 6.0 m/km

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